I’ve built myself an unraid server, using an atom-based motherboard – the POV/ION330, complete with a picoPSU, so it’s completely silent, apart from the hard drives.
Getting Wake on LAN to work on the POV motherboard wasn’t particularly easy. The settings in the BIOS weren’t clear. PME is a Power Management Event. It also has wake-on-ring. I enable both, but WOL still wasn’t working.
Some digging shows that your ethernet drivers need to enable WoL too. This was a bit surprising to me, since turning the computer on is done completely separately from the OS, but whatever! To enable WoL on the NIC from unraid, at the command line, run the following command.
ethtool -s eth0 wol g
There’s lots of useful information for setting up WoL on an unRAID system at http://lime-technology.com/wiki/index.php?title=SetupSleep(S3)andWakeonLan_(WOL)